Reindex collection array after filtering values

[endelwar]

IterableImplementation relies on a zero-indexed offset; when filtering a collection $collection->periods array isn't reindexed, causing collection iteration to stop at the first hole in the index.
Applying array_values to array_filter results fixes the bug.
array_values performs better than splat-packing.

[freekmurze]

Thanks!

[endelwar]

Glad to help!